Answer: Leyland cypress is a popular tree for screening and privacy plantings. You might also consider "Witchita Blue" or "Skyrocket" junipers. These are reasonably fast growing, upright plants. Or, American arborvitae (Thuja occidentalis) is a tall, columnar evergreen that's a natural for planting in rows for quick screening. These are non-flowering evergreens.
Or, you might consider Pieris, Spirea, Photinia, or Escallonia. These shrubs can be quite wide, but you can prune them to keep them 4-6' wide. These plants flower. Hope one of these suggestions works for you in your landscape!
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